diff options
| author | Rik van Riel <riel@redhat.com> | 2016-05-21 02:56:31 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-05-21 03:58:30 +0300 |
| commit | 59dc76b0d4dfdd7dc46a1010e4afb44f60f3e97f (patch) | |
| tree | 6ab5b94e946f00b6f369185fd3a2b490ceb91240 /include/linux/memcontrol.h | |
| parent | bbddabe2e436aa7869b3ac5248df5c14ddde0cbf (diff) | |
| download | linux-59dc76b0d4dfdd7dc46a1010e4afb44f60f3e97f.tar.xz | |
mm: vmscan: reduce size of inactive file list
The inactive file list should still be large enough to contain readahead
windows and freshly written file data, but it no longer is the only
source for detecting multiple accesses to file pages. The workingset
refault measurement code causes recently evicted file pages that get
accessed again after a shorter interval to be promoted directly to the
active list.
With that mechanism in place, we can afford to (on a larger system)
dedicate more memory to the active file list, so we can actually cache
more of the frequently used file pages in memory, and not have them
pushed out by streaming writes, once-used streaming file reads, etc.
This can help things like database workloads, where only half the page
cache can currently be used to cache the database working set. This
patch automatically increases that fraction on larger systems, using the
same ratio that has already been used for anonymous memory.
[hannes@cmpxchg.org: cgroup-awareness]
Signed-off-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reported-by: Andres Freund <andres@anarazel.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/memcontrol.h')
| -rw-r--r-- | include/linux/memcontrol.h | 25 |
1 files changed, 0 insertions, 25 deletions
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index 94da96738df3..a805474df4ab 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -415,25 +415,6 @@ unsigned long mem_cgroup_get_lru_size(struct lruvec *lruvec, enum lru_list lru) return mz->lru_size[lru]; } -static inline bool mem_cgroup_inactive_anon_is_low(struct lruvec *lruvec) -{ - unsigned long inactive_ratio; - unsigned long inactive; - unsigned long active; - unsigned long gb; - - inactive = mem_cgroup_get_lru_size(lruvec, LRU_INACTIVE_ANON); - active = mem_cgroup_get_lru_size(lruvec, LRU_ACTIVE_ANON); - - gb = (inactive + active) >> (30 - PAGE_SHIFT); - if (gb) - inactive_ratio = int_sqrt(10 * gb); - else - inactive_ratio = 1; - - return inactive * inactive_ratio < active; -} - void mem_cgroup_handle_over_high(void); void mem_cgroup_print_oom_info(struct mem_cgroup *memcg, @@ -646,12 +627,6 @@ static inline bool mem_cgroup_online(struct mem_cgroup *memcg) return true; } -static inline bool -mem_cgroup_inactive_anon_is_low(struct lruvec *lruvec) -{ - return true; -} - static inline unsigned long mem_cgroup_get_lru_size(struct lruvec *lruvec, enum lru_list lru) { |